Fletcher J P, Kershaw L Z, Chan A, Lim J
Department of Surgery, University of Sydney, Australia.
J Cardiovasc Surg (Torino). 1990 May-Jun;31(3):364-7.
A total of 56 lower extremities in 28 patients were evaluated by both conventional arteriography and ultrasound duplex scanning. Overall sensitivity for duplex scanning compared to arteriography in detecting stenotic or occlusive disease was 91%, specificity was 94%, positive predictive value 85% and negative predictive value 97%. Results for Duplex scanning were better in the proximal and middle segment compared to the distal third of the superficial femoral artery. The sensitivity of segmental lower extremity pressures and pulse volume recordings for predicting proximal superficial femoral artery disease compared to arteriography was 82%; specificity was 79% and accuracy 80%, all inferior to that of Duplex scanning. Duplex scanning is a promising technique suitable for noninvasive assessment of patients presenting with suspected superficial femoral artery disease. It should readily identify candidates for percutaneous interventional techniques in which a patent segment of proximal superficial femoral artery is required for access. It will also be useful in follow-up studies of patency of the superficial femoral artery following interventional procedures such as balloon dilatation and laser angioplasty.
对28例患者的56条下肢进行了传统动脉造影和超声双功扫描评估。与动脉造影相比，双功扫描检测狭窄或闭塞性疾病的总体敏感性为91%，特异性为94%，阳性预测值为85%，阴性预测值为97%。与股浅动脉远侧三分之一相比，双功扫描在近端和中段的结果更好。与动脉造影相比，下肢节段性压力和脉搏容积记录预测近端股浅动脉疾病的敏感性为82%；特异性为79%，准确性为80%，均低于双功扫描。双功扫描是一种有前景的技术，适用于对疑似股浅动脉疾病患者进行无创评估。它应能轻松识别适合经皮介入技术的患者，而经皮介入技术需要近端股浅动脉有一段通畅的节段以便进行操作。它在诸如球囊扩张和激光血管成形术等介入手术后对股浅动脉通畅情况的随访研究中也将很有用。
